What’s the cheapest paid traffic method to grow an affiliate email list?

[Daniel]

One of the cheapest ways to get paid traffic for growing an affiliate email list is by using solo ads. With solo ads, you pay someone who already has an email list to send out your offer to their subscribers. You give them your link and a short message, and they send it out for you. It's a quick way to get traffic and build your own list. But it works best when your opt-in page is clear and your offer is something people want. Another low-cost option is running Facebook ads with a small budget. You can target people based on their interests and show them a freebie in exchange for their email. Whichever method you try, the goal is to spend less and still get good leads. If you’re exploring low-cost paid traffic to build your email list, which method do you think might work better for your kind of offer?